How to convert a LocalDate to an Instant?
The Instant
class represents an instantaneous point on the time-line. Conversion to and from a LocalDate
requires a time-zone. Unlike some other date and time libraries, JSR-310 will not select the time-zone for you automatically, so you must provide it.
LocalDate date = LocalDate.now();
Instant instant = date.atStartOfDay(ZoneId.systemDefault()).toInstant();
This example uses the default time-zone of the JVM - ZoneId.systemDefault()
- to perform the conversion. See here for a longer answer to a related question.
Update: The accepted answer uses LocalDateTime::toInstant(ZoneOffset)
which only accepts ZoneOffset
. This answer uses LocalDate::atStartOfDay(ZoneId)
which accepts any ZoneId
. As such, this answer is generally more useful (and probably should be the accepted one).
PS. I was the main author of the API
In order to convert it to an instant you need to have a LocalDateTime instance, e.g.:
LocalDate.now().atStartOfDay().toInstant(ZoneOffset.UTC)